Digital Caliper (0-150mm)When it comes to building today's high precision kits, a pair of calipers are a must. Ruddog Products' Digital Calipers have a measuring range from 0 mm to 150 mm and come in a handy plastic storage box to protect it against damage when not in use. Specifications: Resolution 0. 01mm 0. 0005" Power Battery One Button Cell (3. 0V CR2032) Accuracy 0. 02mm 0. 001"(<70mm) 0. 03mm 0. 001" (>70 200mm) 0. 04mm 0. 0015" (>200 300mm) Repeatability 0. 01mm 0.